K berger



NOV. 17, 1936. ER Re. 20,170

SWIVEL HARP FIXTURE FOR ELECTRIC LAKES Original Filed March 9, 1934INVENTOR KORNEL BERGER 1 1, 0* ATTORNEY Reissued Nov. 17, 1 936 UNITEDSTATES swrvmnsnrrix'mnaron MOMS Kernel Berger. New York, N. Y. OriginalNI. 1,974,947, dated September 25, 1934,

- Serial No. 114,810, March 9, 1934. Application for the In! 11, 1935,Serial No. 21.068

This invention relates to' new and useful improvements in a swivel harpfixture for electric lamps.

The invention has for an object the construc- 5. tion of a fixture asmentioned by a wire harp frame, a stud swivelly supported on the wireframe, and an t for fric- ,tionaliy holding the stud against swiveling.

Still further the invention particularly pro- 10 poses an arrangement ofa resilient means on the stud acting between a washer slidable upon thestud and resting against the frame for constituting the means tofrictionally control the swiveling of the stud.

15 As another-object of thisinvention it is proposed to provide a casingin conjunction with the stud for extending over and partially coveringthe resilient element.

I Another one of the objects of this invention is 20 Y the provision ofa protuberance on the stud forming a shoulder for the casing mentionedin the previous paragraph and an whereby'a knob threadedly enga s ashank on the top of the stud for acting against a shade frame ma 2;;manner sothat theshadeframeagainst the casing and so aids in controllingthe action of the resilient element. 7

Still further the invention prom the provision of cam portions arrangedupon a washer 3o slidable and rotatable upon the stud forcontrollingthepressureandthusthefrictionbetween the washer and the wireharp frame. V I

Still further the invention the construction of articles as mentionedwhich are sim- Pie and durable and which may be manufactured and sold ata'reasonable cost. 1 For further comprehension of the invention, and ofthe objects and advantages thereof, referme will be had to the followingdescription and 40 accompanying drawing, and to the. appended claims inwhich the various novel features are more particularly set forth. I

In the accompanying drawing forming a inaterial part of thisdisclosure:--

' 45 m. 1 is aside elevational view of an electric lamp with a swivelharp according to this invention. Fig. 2 is a fragmentary enlargedsectional view I so taken on the line 2-2 of Fig. 1.

, Fig. 3 is a horizontal sectional view taken on the line 3-4 of Fig.2.

Fig. 4 is a perspective view of the swivel harp- 55l'ig.5isaperspectiveviewsimilartol ig.4

but illustrating another of the invention.

F18. 6.1a afragmentary sectionnlvlew taken onthelinel-iofligj. I .0Flg.'iisaperspec 1YY eWsimihrhIig.4,

i1 project.

but illustrating e still further modified form of harp fixture.

Fig. 8 is a sectional view similar to Fig. 2 but illustrating amodification of the invention.

Fig. 9 is another sectional view similar to Fig. 2 but illustrating astill further modified form. Fig. 10 is another view similar to Fig. 2but illustrating a still further'modifled form.

The swivel harp-fixture according to this ini0 vention in Fig. 1, isshown mounted upon 'a lamp ll having a conventional lamp socket llsupporting the electric light II.

The fixture comprises abracket. element i3 formed with an opening l4adapted to engage Over a stud upon which the socket I l is mounted tothe lamp. The details .of this construction is not given in thisspecification since it forms no part of the invention and is generallyknown in the art. The harp fixture includes a wire memher ll bentsubstantially into u-shape, but inverted and having its ends secured tothe bracket The dot and dash lines I! illustrate alamp shade. Details ofthis lampshade are not important except that it is provided with acentral annular portion Ii from which radial wire ribs The other detailsof the construction of the lamp shade lFare not important andconsequently are not shown upon the drawing since they form no part ofthe invention.

A stud i8 is formed with atransverseopening i9 through which a portionof the wire harp frame it extends. A method of constructing the wireharpframe istoengagethewire fromwhich the harp frame is formed, whilestill in a straight condition, through the opening I4 and then.

bending the ends and the sides into a proper shape. A washer/l0 is.slidably mounted upon the'stud llandisforthepurpose ofresting40 againstthe'upper portion of the. wire frame.

A resilienteiement 2! is also mounted upon the stud ll andactsbetweenthestudandthewasher 20 for frictionally controlling the swivelingof thestud Iiuporn the wireframeil.

The resilient element 2| does not directly enegage against an abuttingporlon of the stud but actsagainstacasingflwhichisalsoarranged slidabiyupon the stud ll but in turn against a protuberance or enlarged portion.upon the stud. The resilient element 2! is in the form of aconventional flat split lock washer.'lheannularmemberiSisaidaptedtomgage over the enlarged member "and todirectly engage against the top of thecasing 22. Thevcasingflisformedfromaflatdiscwhichhssits ends turned downwards so as to-coverthe resillent member 2| and the 20, a knohll threadediy engagesupon-athreaded projecting from the top of the 23; t

LOne of the features of this invention is the fact that the knob 24 maybe turned over down upon the threaded portion 25' for the purpose'ofurging or pressing the annular member 8 against the casing 22 forcompressing and adding more tension to the resilient element 2| which inturn will transfer the stress to the washer 2| acting against the frameII and so aid in controlling the frictional resistance of swiveling ofthe stud l8. A resilient means is also provided for adjust- :ing orvarying the pressure of the resilient element II. This latter meanscomprises can; portions 2. formed upon the bottom face of the washer 2|and comprising a portion on each side of the bottom face of the washer2|! relative to the wire frame ll. These portions are included in amanner so that as the washer 20 is turned to the various rotativepositions out portions of the bottom face thereon will act against thewire frame H and so compress or release the resilient member I i. Theperiphery, of the washer 20 is formed with several cutout portions 28adapted to be engaged by a suitable turning tool so that the washer mayreadily be turned to any adjustable position. These cutouts ili arearranged in diametrically opposite pairs and it is advisable that theturning tool engage one of the pairs to grip the washer for the turning.In Fig. 4 a perspective view of the swivel harp fixture has beendisclosed in which the lamp shade and the' knob 24 is removed. This viewis shown so that the shapes of certain of the parts may be readilyunderstood.

In Figs-5 and 6 another form of the invention has been disclosed whereina swivel harp frame ll consisting of an upper section 21 and a lowersection ll plvotally connected with a joint 29 or with the sections 21and 28 may be set at various inclinations to each other. The joint 29includes a screw II adapted to clamp the sections in adjusted positions.

A stud II is formed with an opening 32 through which the upper portionof the frame section 11 passes. A washer 33 is arranged upon a stud 3iand frictionally engages against the upper portion of the frame section21 for frictionally holding the stud from swiveling. The 'stud ii isformed with an enlarged portion 3! immediately above the washer 33 so asto hold the washer in position. The upper portion 35 of the stud isthreaded for receiving a knob such as 2!, previously described. In otherrespects this form of the invention is similar to the preferred form andsimilar parts may be recognized by corresponding reference numerals.

In Fig. '1 another embodiment of the invention has been disclosed whichis similar to the form illustrated in Figs. 5 and 6 but distinguishmerely in the, construction of the wire harp frame ll. This frame issimilar to the frame ll except for the lower ends thereof whicharepivotally connected with the bracket is by the pintle bolts 30. Thesepintle bolts are adapted to clamp 66 the frame ll!- at various positionsupon the bracket" II. In other respects, the construction is identicalto that previously described, and the similar parts may be recognized bythe corresponding reference numerals. g

In Fig. 8 another embodiment of the invention has been disclosed whereina stud '31 is shown jswivelly mounted upon the wire frame I4 and isshown formed with an enlarged portion 38, asecond enlargedportion 39,and a top threaded 1 portion II. A washer 20* engages upon the stud thelamp shade are not given.

31? against the shoulder formed by the bottom side of the portion 38.This washer 20' has its lower face formed with the ca n surface 2.. Thearrangement is such that the washer may be turned to various rotativepositions for the purpose of controlling the tension between the washerand the frame II as previously described.

A second washer ll engages upon the enlarged portion 39 which is of aslightly smaller diameter than the portion it so that a shoulder isformed constituting the top surface of the portion 3| upon which thewasher ll rests. The annular member it engages over the portion 39 andrests against the washer ll. This annular member If is formed with aradial arm H. The details of A knob 20 is shown threadedly engaging theportion ll and I urging the annular member it against the' washer ll.

In Fig.9 another modified form of the invention has been disclosedwherein a :stud 42 is shown formed with an opening 43 by which it ismounted upon the frame II. This stud is formed with an enlarged'portion4'4 and a resilient element in the form of a lock washer 5 acts againstthe shoulder formed by the bottom face of the enlarged portion 44 and awasher mounted slldably upon the stud 42 immediately against the upperside of the frame II. This washer III is formed with the cam faces 20'as previously described. The arrangement is suchthat the washer 20 maybe turned for controlling the pressure against the frame ll and socontrol the swiveling of the stud C2. The upper end of the stud 42 isformed with a threaded portion 6 for a knob as previously described.

In Fig. 10 another" modifled form .of the invention has been disclosedwherein. a stud 41 is shown with an opening 48 through which a portionof the frame it passes so that the stud is swivelly mounted upon theframe. A washer 20 is rotative upon the stud 41 and has the cam surfaces20 on its bottom face as previously described. The stud is provided withan enlarged portion is. A washer is slidable upon the stud l1 andengages against the shoulder formed by the bottom face of the enlargedportion 49. An expansion spring ii is disposed between the washers 50and II and serves to urge the washer 20 against the frame I.

The upper portion of the stud is formed with a threaded portion 52 inthe knob as previously described. The spring 5| constitutes'theresilient element for urging the washer 20 against the frame I.

Afeature of the invention is that the stud may be placed to variouspositions upon the frame, that is inclined positions for the purpose ofholding the lamp shade 15 at various inclined positions. 'The resilientelements which function to frictionally hold the stud in adjustedpositions serves to maintain and hold the stud even though the lamp maybe used for a considerable length n of time and the opening in the studthrough While I have illustrated and described the preferred embodiment(if my invention it is to be understood that I do not limit myself tothe precise construction herein disclowd and the right is reserved toall modifications and changes com- 15 some ing within the scope of theinvention as defined, in the appendedclaims.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is:

l. A swivel harp fixture for an electric lamp, comprising a wire harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, and .a resilient element on said stud acting between saidstud and washer for frictionally controlling the swiveling of the studon said frame.

2. A swivel harp fixture for an electric lamp, comprising a wire harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, and a resilient element on said stud acting between saidstud and washer for frictionally controlling the swiveling of the studon said frame, said wire harp frame comprising a piece of wire engagingthrough said stud and bent at the ends and connected with a supportingbracket.

3. A swivel harp fixture for an electric lamp, comprising a wire harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, and a resilient element on said stud acting between saidstud and washer for frictionally controlling the swiveling of the studon said frame, said washer being formed with a cam portion upon itsbottom face and being rotative upon said stud for controlling. the'pressure and thus the friction between the washer and the frame.

4. A swivel harp fixture for an electric lamp,

comprising a wire harp frame having a portion passing through a stud forswivelly supporting thestud, a washer 'slidable on said stud and restingagainst a portion of said frame, and a resilient element on said studacting between said stud and washer for frictionally controlling theswiveling of the stud on said frame, said washer. being formed with acam portion upon its bottom I face and being rotative upon said stud forcontrolling the pressure and thus the friction between the washer andthe frame, said washer being formed with several peripheral cutoutportions to facilitate gripping of the washer for its rotation.

5. A swivel harp fixture for an electric lamp, comprising a wire harpframe having a portion passing through a .stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, a resilient element on said stud acting between said studand washer for frictionally controlling the swiveling of the stud onsaid frame, and a casing on said stud for extending over said resilientelement.

6. A swivel harp fixture for an electric lamp, comprising a wire harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, a resilient element on said stud acting between said studand washer for frictionally controlling the swiveling of the stud onsaid frame, and a casing on said stud for extending-over said resilientelement, said casing being located between said resilient element and aprotuberance upon said stud. i

7. A swivel harp fixture .for an electric lamp, comprising a wire harpframe having a portion end of said stud being formed with a threadedportion, and a knob engaging said threaded portion for clamping againstan annular member of a lamp shade for urging the annular member againstthe casing and so functioning against resilient elements for controllingthe pressure thereof.

8. A swivel harp fixture for electric lamps, comprising a wire harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer on said stud'and resting against a portion of saidframe and against a protuberance on said stud, a second washer restingupon the other side of said prov tuberance, a smaller sized portion onthe top of said protuberance and a threaded portion from said lattermentioned portion.

9. A swivel harp fixture, for an electric lamp comprising a wire harpframe having aportion passing through a stud for swivelly supporting thestud,a washer slidable on said stud and resting against a portion ofsaid frame, and a resilient element on said stud acting between saidstud and washer for frictionally controlling the swiveling of the studon said frame, said stud being formed with an enlarged portion, andsaidresilient element acting against said enlarged portion and saidwasher.

' 10. A swivel harp fixture for an electric lamp, comprising a harpframe having a portion passing through a stud for swivelly supportingthe stud, a washer slidable on said stud and resting against a portionof said frame, and a resilient element on said stud acting between saidstud and washer for frictionally controlling the swiveling of the studon said frame.

11. A swivel harp fixture for mounting a shade on an electric lamp,comprising a wire harp frame, a stud adjustably mounted on a portion ofsaid frame for supporting said shade, a washer mounted on said stud, andshoulder means forming a permanent part of said stud for holding saidwasher in frictional. engagement with said frame and for supporting saidlamp shade.

12. A swivel harp fixture for mounting a shade on an' electric lamp,comprising a wireharp frame, a stud adjustably mounted on a portion ofsaid frame for supporting said shade, a washer mounted on said stud,means for removably attaching said shade on said stud, and shouldermeans independent of said shade attaching means and forming a permanentportion of said stud for holding said washer in frictional engagmentwith said frame.

13. Aswivel harp fixture for mounting a shade on an electric lamp,comprising a wire harp frame, a stud adjustably mounted on a portion ofsaid frame for. supporting said shade, a washenmounte'd on said stud,threaded means for removably attaching said shade on said stud, shouldermeans between said washer and said threaded means and forming apermanent portion of said stud for holding said washer in frictionalxengagement with said frame in relationship independent of said threadedmeans. KORNEL BERGER.

